Apparatus for pumping liquids.



No. 832.663. Patented Sept. 5, I899. E. TATHAM.

APPARATUS FOR PUMPING LIQUIDS.

Application filed June 6, 1899.)

No Model.)

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mm: STATES EDIVIN TATIIAM, OF LONDON, ENGLAND.

APPARATUS FOR PUMPING LIQUIDS.

SPECIFICATION forming part of Letters Patent No. 632,663, datedSeptember 5, 1899. Application filed June 6, 1899. erial No. 719,579.(No model.)

T 0 (0M whont it may concern.-

Be it known that I, EDWIN TATHAM, gas engineer, a subject of the Queenof Great Britain and Ireland, and aresident of Oolfe Lodge, IlewishamI'Iill,London, in the county of Kent, England, have invented certain newand useful Improvements in Apparatus for Pumping Liquids, whichinvention is fully set forth in the following specification.

This invention has for its object to effect the pumping of liquids byforce due to the expansion generated by the ignition of combustiblegases acting directly upon the liquid to be displaced, fresh charges orsupplies of the liquid entering the space from which liquid has beenexpelled, these fresh charges or supplies being in turn expelled by theexpansion due to the ignition of succeeding charges of combustiblegases.

I will describe the invention by reference to the accompanying drawing,which shows one of my improved pumping apparatus in vertical section.

The charges of combustible gases are forced through a non-return valve ainto a combustion-chamber A, situated at the top bend of an S-shapedpipe B. The open end of the up-.

per bend of the S-pipe B dips into liquid contained in a box O, fittedwith the suctionvalve 0 and connected to the suction -pipe C, while thelower bend of the said S-pipe communicates with a box B, fitted with thedelivery-valve Z). The delivery-pipe B dips into the liquid contained inthe box B, and the liquid in the boxes B and C only partly 'fills thesaid boxes, so that spaces b and c are left for containing air to act ascushions to produce a continuous flow. At each ignition of a charge ofcombustible gases in the combustion-chamber A liquid is forced up thedelivery-pipe B and after each ignition a fresh charge of liquid is, bythe partial vacuum thus produced in the S-pipe B, caused to pass up thepipe Gv into the space from which the liquid was expelled,to be in itsturn expelled on the ignition of the next charge of combustible gases,and so on while the apparatus is in use.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed,

I declare that what I claim is 1. In apparatus for pumping liquid thecombination with an S-shaped pipe of means for admitting an explosivemixture into the upper bend of the said pipe, an igniter for theexplosive charge, suction and delivery pipes, valve-boxes connecting thesuction, delivery and S-shaped pipes together and only partly filledwith liquid, and into the liquid in which valve-boxes the inlet ends ofthe delivery and S-shaped pipes dip whereby cush ioning-chambers areformed in the upper portions of said boxes, substantially as hereinbefore described.

2. In apparatus for pumping liquid, the combination with acombustion-chamber, of means for admitting explosive mixture thereto, anigniter, suction and delivery pipes to the chamber and air-cushioningmeans interposed between the suction and the delivery to produce acontinuous flow, substantially as described.

3. In apparatus for pumping liquid, the combination with acombustion-chamber, of means for admitting explosive mixture thereto, anigniter, suction and delivery pipes to the chamber, and valve-boxes inwhich the pipes dip so as to allow them to only partially fill withliquid whereby cushioning-chambers are formed in the upper portion ofsaid boxes, as and for the purpose set forth.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

E. TATIIAM.

\Vitnesses:

WILLIAM FREDERICK UPTON, JOHN EDWARD NEWTON.

